Air-strainer.



D. P. DAVIES.

AIR STRAINER. APPLICATION FILED FE'B. l5. 1918- l,286,95 1. Patented Dec. 10, 1918.

Ain-streamen.

1,286,951. spente-ation of Letters Patent. Patented Dec, 10, 1918, I l Application iled February 15,1918. Serial No. 217,370.

To all w/ rom t may concern: 11,12. I also providea guide,.18,between Be it known that I, DAVID P. DAvms, a sald oat cylinder 13 and inlet pipe 10, prefcitizen of the United States, residing at Raerably in the form' of a spider, so that air cine, in the county of Racine and State of may flow therethrough durin its circulation, p v Wisconsin, have invented certain new and and which is secured to sai float cylinder 60 useful. Improvements in Air-Strainers, of and the ring portion of f'whiioh approxiwhich the following is a specification. mately contacts with said inlet pipelO, and c In the use ofinternal combustion engines thus acts as a guide to direct the proper applied to tractorsand like propellers, espemovement of said float cylinder and j the ,cially lfor field work, the carbureters are fioat 14 associated therewith as the latter 65 subjected to dust conditions to such extent moves vertically over said inlet pipe. that they become clogged, and fine dustvparv Upon the main body 5 of thestrainer, I ticles are carried .therethrough into the cylsecure a cover, 20, held in place by lhook inders, bearings and other parts of the mo' bolts, 21, or other suitable devices, about the tor,` causing wear and -consequent damage inner edge of which cover is. a'reinforcing 70 thereto. My object is to provide an eicient strip, 22, which laps the inner upper edge of air strainer or moistener for cleansing the the body 5 and serves as a guide when asair so that dust will be separated therefrom semblig these parts, and, in orderto insure and the air purilied and moistened before it an air tight fit between jthem,'a gasket, 23,-is

' 20 enters into the carbureter,l thus obviating provided. The upper side `of the cover. is 75 the difficulties and preventing the damage provided with a water illing plug, 25, and

' referred-t0, and it consists incertain-details also an air outlet pipe, such as the elbow,

of construction and arrangements of parts 26,A arranged to be connected with a carwhich I have demonstrated in actual prac' 'bureter In concentricrelation to said outtice to be highly practical and effective, all let'pipe 26 I arrange a depending guide, 28, 80

las will hereinafter more fully appear. having a head, 29, which guide telescopes In the accompanying drawing, forming a about the float cylinder 13, and, together part hereof, Figure 1 is a central vertical with the guide 18, serves to maintain said sectional view of my improved strainer, and cylinder in positive position during its up.

.# Fig; 2 is a horizontal sectionalviewtaken ward and downwardmovement. rlhe lower 85 55 gauze ring 16 by contact with-the lnlet pipes tractor its outlet pipe connected with 1M on the dotted line 2 2 in Fig. 1. end of said guide 28 may be projected in In said drawing the numeral, 5, indicates wardly as at 30, or' other suitable arrange' the main cylindrical body of the' strainer, ment applied, for approximately contacting. having a conical bottom, 6, which bottom is withv said cylinder. y' Above the head 29 is an provided with an outlet, 7, having a remov'- air chamber, 31, having openings in its 90 able plug, 8, therein. An air inlet pipe,.1(),l wall, to which I apply gauze or other mesh extends upwardly through the body 5 4and material, 32a for breaking up air bubbles, terminates in two branches, 11 and 12, being'- and secure to said air chamber 314y and guide in eect a T pipe by which I am enabled to l28, deecting or baille plates, 32, 33, for a 40 take in a sudicient outside air supply from purpose toappear;l It will thus be seen that 95 opposite sides of the device. About said -the cover embodies said depending guide, f pipe 10 is a cylindrical member, 13, arranged screening, delectors, water inlet and air in telescopin relation to said pipe, and at outlet all in a single assemblage, which may its lower en carries an air tight loat, 14, be readily removed and replaced in proper extending circumferentially about the same. alinement with the oat contained in the 100 Projecting `downwardly from the periphery body of the strainer. of said oat is a gauze ring, 16, which serves In the main body 5 of the strainer I prothe. purpose of breaking up air bubbles, as vide a transparent inspection plate, 35, will be 'hereinafter more fully explained. Vthrough which the amount of water to be Near the lower end of the body 5 and surcontained therein may be determined, and, 105

, rounding the inlet pipe 10 is a collar, 17,0f with which plate may be associated an indiany suitable arrangement, which acts as a cater (not shown) if desired. stop for the float 14 when it descends to In the use of my improved strainer, .as

lowermost position, to prevent inj'ury to the will be understood, the same is installed on a the carbureter.

' the fioat cylinder 13, and, as

4 comes arrested when Water is placed in the body portion through the filling inlet to the amount that practice requires and which can be determined through inspection plate '35. rlhe mechanical suction of the motor draws the outside air through the branch inlet pipes. 11, 12, and up through pipe 10 into v the latter is closed at 19, the air is deiected downwardly therethrough and between the spaces in the spider like guide 18, passing along within the gauze ring 16, thence therethrough, and upwardly through the meshes 32a and out through the pipe 26 to the carbureter, the line of passage of the air being clearly indicated by the arrows in Fig. 1. 1n this manner anyextraneous matter (such as grit or fine dust particles) mixed with theair be-V reaching the water and is caused to be precipitated therein, while the airhas become separated therefrom and washed. The movement of the air is impeded by the screen 16 through which it passes, which has the effectl of breaking upv any bubbles which may contact therewith6 and the separation of dust which may be surrounded by globules of air. As a further safeguard for separating dust particles, the upper screens 32%t are provided which will exclude any small amount of grit that maybe carried thus far. As will vbe vunderstood, the accumulated sediment in the conical bottom of the lstrainer may be readily drained therefrom through the outlet pipe 7..

In practice it is desirable only to moisten the air passing through the strainer, as any small amount of water drawn into the carbureter will be'injurious to the fuel vaporized thereby. I have found that the suction of the engine under some circumstances has the eect of drawing waterfrom about 'the fioat and upA along the inner wall of the strainer body 5, and also along the guide 28, to an ap 'reciable extent, and to prevent such waterrom passing through the upper meshes 32a with the air, l provide the deiecting plates 32, 33, which have a deflectingaction upon such water, and any portion thereof in the nature of spray or `and inlet for limiting drops whichA become deposited upon the deectors drips od to be returned to the main water supply.

l claim as my invention:

1. In an air strainer, a main body terminating in a conical bottom, a plurality of air inlets in the lower portion of said body communicating with an air inlet extending into said body, a screened Boat surrounding said air inlet, a spiderfshaped guide between said inlet and oat, a stop beneath said ioat to limit its range of descent, a cover for saidbody embodying a water filling inlet and an air outlet, a screen in said cover through which air passes, and a d'eiector to prevent iuid from passing through'said screen and outlet.

2. In an air strainer, a'body portion, an air inlet pipe extending thereinto, a vertically movable floatover said pipe, a guide between said pipe and said oat, a depending cylindrical guide about said ioat, screens in the upper end of said latter guide for preventing the passage of dust particles, and deiectors associated with said guide for preventing water from entering said screens.

3. ln an air strainer, a body portion embodying an air inlet and a fioatand a cover for said body comprising a depending guide adapted to be positioned over said float, an

air chamber over said guide embodying a screen, a water defiector'associated with the up er endof said guide, and an outlet pipe leading from said airchamber.

4. An air strainer comprising a cylindrical body having a conical bottom, air inlet central air inlet communicating with said pi es. a float telescopically arranged over.

between said float a guide the lower movement of said float, a cover for said body, and transparent meansin said body for inspection of theinterior thereof.

ln testimony whereof l aflix my signature in the presence of two'witnesses.

said central inlet,

i itnesses: I

' E. M. JOHNSON, al'. WALsrr.

pipes m the lower portion of saidbodyfa` DAVD l?. DAVIES. 

